Journal
MINERALS ENGINEERING
Volume 172, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mineng.2021.107133
Keywords
Arsenic removal; Sulfide minerals; Enargite; Arsenopyrite; Dissolution; Oxidation
Funding
- National Natural Science Foundation of China [52174266]
- Open Foundation of State Key Laboratory of Mineral Processing [BGRIMM-KJSKL-2020-06]
- Opening Project of Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education [19kfgk01]
- Education Foundation of Central South University [GCY2020349Y]
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This paper summarizes the main methods for arsenic removal from enargite and arsenopyrite, including roasting, oxidative dissolution, and selective dissolution, emphasizing the importance of removing arsenic from these two minerals.
Enargite (Cu3AsS4) and arsenopyrite (FeAsS) are the most abundant arsenic containing sulfide minerals in the world. The existence of arsenic can significantly deteriorate the processes of mineral processing and extractive metallurgy, and also definitely cause environmental contamination due to the arsenic release. Hence, the arsenic removal from these two kinds of sulfide minerals is extremely important. However, most of the review articles only focus on arsenic removal from wastes. In this paper, the main arsenic removal methods from enargite and arsenopyrite have been summarized and discussed, mainly including roasting, oxidative dissolution (acidic condition, alkaline condition, pressure oxidation and biooxidation) and selective dissolution.
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